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PHP | SplFixedArray offsetExists() Function

  • Last Updated : 23 Aug, 2019

The SplFixedArray::offsetExists() function is an inbuilt function in PHP which is used to check provided index exist or not in an array.

Syntax:

bool SplFixedArray::offsetExists( $index )

Parameters: This function accepts single parameter $index which specifies the requested index.

Return Value: This function returns true if requested index found otherwise return false.

Below programs illustrate the SplFixedArray::offsetExists() function in PHP:



Program 1:




<?php
  
// Create a fixed size array
$gfg = new SplFixedArray(6);
  
$gfg[0] = 1;
$gfg[1] = 5;
$gfg[2] = 10;
  
// Check whether index exist or not
var_dump($gfg->offsetExists(2));
?>
Output:
bool(true)

Program 2:



<?php
  
// Create some fixed size array
$gfg = new SplFixedArray(6);
  
$gfg[0] = 1;
$gfg[1] = 5;
$gfg[2] = 1;
$gfg[3] = 11;
$gfg[4] = 15;
$gfg[5] = 17;
  
$i = 0;
  
// Iterate array and print values
while($i < 8) {
  
    // Check whether index exist or not
    var_dump($gfg->offsetExists($i)); 
  
    $i++;
}
?>
Output:
bool(true)
bool(true)
bool(true)
bool(true)
bool(true)
bool(true)
bool(false)
bool(false)

Reference: https://www.php.net/manual/en/splfixedarray.offsetexists.php
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R_Raj
@R_Raj
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